They greeted him individually and invited him to Philadelphia next year for the Vatican-sponsored Eighth World Meeting of Families. The event is expected bring hundreds of thousands of visitors to the city.

Nutter presented Pope Francis with a jersey from his high school alma mater, Saint Joseph's Prep, which is run by Jesuits - the pope's religious order.

Copyright 2014 WFMZ. The Associated Press contributed to this report. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.